from trex_stl_lib.api import * from scapy.contrib.mpls import * # import from contrib folder of scapy class STLS1(object): def __init__ (self): pass; def create_stream (self): # 2 MPLS label the internal with s=1 (last one) pkt = Ether()/MPLS(label=17,cos=1,s=0,ttl=255)/MPLS(label=12,cos=1,s=1,ttl=12)/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)/('x'*20) # burst of 17 packets return STLStream(packet = STLPktBuilder(pkt = pkt ,vm = []), mode = STLTXSingleBurst( pps = 1, total_pkts = 17) ) def get_streams (self, direction = 0): # create 1 stream return [ self.create_stream() ] def register(): return STLS1()